Home / 72,438,907.20-108,663,609.60-43,622,995.20

Finding the Fourth Proportional to 72,438,907.20, 108,663,609.60 and 43,622,995.20

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Solution

The fourth proportional to 72,438,907.20, 108,663,609.60 and 43,622,995.20 is: 65,437,653.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,438,907.20 : 108,663,609.60 = 43,622,995.20 : x
  2. Step 2: Convert to fraction form
    72,438,907.20/108,663,609.60 = 43,622,995.20/x
  3. Step 3: Cross multiply
    72,438,907.20x = 108,663,609.60 × 43,622,995.20
  4. Step 4: Simplify right side
    72,438,907.20x = 4,740,232,119,995,474
  5. Step 5: Solve for x
    x = 4,740,232,119,995,474/72,438,907.20
  6. Step 6: Final answer
    x = 65,437,653.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.